Compatibility - Fit for FDM 3D printer equipped with sprite extruder or sprite extruder pro kit, like Ender 3 S1/Ender3 S1 Pro/CR10 Smart Pro/Sermoon V1/Sermoon V1 Pro 3D Printer heater block.
Upgraded Material - Those silicone socks are made of heat-resistant, non-stick silicone material, high-temperature resistance: 300℃. Consider your safety, if your printing temperature is over 300℃ degree, please remove the silicone cover before starting printing.
Function - The silicone cover will keep your heater block clean and repel plastic of burnt, blackened and build-up, so that can extend the life of the heater block and extruder; and helps to keep the hotend temperature stable.
Durable to use - The silicone case has good flexibility and can be placed close to the heating block, it is easy to install, stable and not easy to fall off, very strong.
After Sales Support -There are more than 20 engineers for after-sales service and provide 24/7 customer service with 1-year limited and lifetime technical assistance. Please contact us via “ask a question”directly to get the professional assistance.